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      原本返回json格式数据的代码：

@ResponseBody    @RequestMapping(value = "getListByTime", method = { RequestMethod.POST, RequestMethod.GET })    public String getListByTime(@RequestParam String aoData,String sEcho,HttpServletRequest request) throws Exception {        AoData paramAoData = new AoData(aoData);                Detail cameraDetail = new Detail ();        detail.setDisplatStart(paramAoData.getiDisplayStart());        detail.setDisplayLength(paramAoData.getiDisplayLength());        List
     
       list = dataService.getListByTime(detail);        int size = list.size();        String[][] data = new String[size][];        for (int i = 0; i < size; i++) {            Detail info = list.get(i);            data[i] = info.values();        }        int total = dataService.getCameraByTimeTotal(detail);                return JSonUtils.toJSon(new DataTableReturnObject(total, total, sEcho, data));    }
     

以上代码断点从数据库中查询的数据没有乱码，但在前台接收的时候乱码。

解决方法：

@ResponseBody    @RequestMapping(value = "getListByTime", method = { RequestMethod.POST, RequestMethod.GET })    public void getListByTime(@RequestParam String aoData,String sEcho,HttpServletRequest request) throws Exception {        AoData paramAoData = new AoData(aoData);                Detail cameraDetail = new Detail ();        detail.setDisplatStart(paramAoData.getiDisplayStart());        detail.setDisplayLength(paramAoData.getiDisplayLength());        List
     
       list = dataService.getListByTime(detail);        int size = list.size();        String[][] data = new String[size][];        for (int i = 0; i < size; i++) {            Detail info = list.get(i);            data[i] = info.values();        }        int total = dataService.getCameraByTimeTotal(detail);                PrintWriter out = null;        try        {            String result = JSonUtils.toJSon();            out = response.getWriter();             out.print(result);            out.flush();        }        catch (Exception e) {          LOG.error("error",e);        }        finally        {            if (out != null) {                out.close();            }        }    }
     

解决方案为：将对象通过流的形式进行传输给前台，PrintWriter向文本输出流打印对象的格式化表示形式。